/*
 * File:    locker.h
 * Author:  Li XianJing <xianjimli@hotmail.com>
 * Brief:   lock interface.
 *
 * Copyright (c) Li XianJing
 *
 * Licensed under the Academic Free License version 2.1
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

/*
 * History:
 * ================================================================
 * 2008-12-10 Li XianJing <xianjimli@hotmail.com> created.
 *
 */

#include "typedef.h"

#ifndef LOCKER_H
#define LOCKER_H

DECLS_BEGIN

struct _Locker;
typedef struct _Locker Locker;

typedef Ret  (*LockerLockFunc)(Locker* thiz);
typedef Ret  (*LockerUnlockFunc)(Locker* thiz);
typedef void (*LockerDestroyFunc)(Locker* thiz);

struct _Locker
{
	LockerLockFunc    lock;
	LockerUnlockFunc  unlock;
	LockerDestroyFunc destroy;

	char priv[0];
};

static inline Ret locker_lock(Locker* thiz)
{
	return_val_if_fail(thiz != NULL && thiz->lock != NULL, RET_INVALID_PARAMS);

	return thiz->lock(thiz);
}

static inline Ret locker_unlock(Locker* thiz)
{
	return_val_if_fail(thiz != NULL && thiz->unlock != NULL, RET_INVALID_PARAMS);

	return thiz->unlock(thiz);
}

static inline void locker_destroy(Locker* thiz)
{
	return_if_fail(thiz != NULL && thiz->destroy != NULL);

	thiz->destroy(thiz);

	return;
}

DECLS_END

#endif/*LOCKER_H*/

